I like building stuff that makes other people’s lives easier. Here’s some of those things:
LGSearch is the search engine for the UK public sector.
The localgovglossary is a wiki based encyclopedia of local government knowledge.
Palimpsest is a remarkably high-minded arts discussion forum. If you are moron, don’t even go there. Really, you won’t like it.
KMSearch is a knowledge management-centric search engine.
blogbase is a bunch of resources about blogging on a wiki.